The Ag9120-S provides the PoE compatibility signature and power classification required by the Power Sourcing Equipment (PSE) before applying up to 15W power to the port. The high efficiency DC/DC converter operates over a wide input voltage range (36V to 48V typ) and provides a regulated low ripple and low noise output. The DC/DC converter also has built-in overload and short-circuit output protection. Features: * IEEE802.3af compliant * Small SIL package size - 56mm (L) x 14mm (H) * Low output ripple and noise * Input voltage range 36V to 57V * Overload and short-circuit protection * High efficiency DC/DC converter (75% typ) * 1500V isolation (input to output) * This module could be used with products Arduino Ethernet shield and Arduino Ethernet